/*
 * Created on 21-Jan-2005
 * Created by Paul Gardner
 * Copyright (C) Azureus Software, Inc, All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 */

package org.gudy.azureus2.core3.tracker.protocol.udp;

import java.io.DataInputStream;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.util.HashMap;
import java.util.Map;

import com.aelitis.net.udp.uc.PRUDPPacketHandler;
import com.aelitis.net.udp.uc.PRUDPPacketReply;
import com.aelitis.net.udp.uc.PRUDPPacketReplyDecoder;
import com.aelitis.net.udp.uc.PRUDPPacketRequest;
import com.aelitis.net.udp.uc.PRUDPPacketRequestDecoder;

/**
 * @author parg
 * 
 */

public class PRUDPTrackerCodecs {
    private static boolean registered = false;

    public static void registerCodecs() {
        if (registered) {

            return;
        }

        registered = true;

        PRUDPPacketReplyDecoder reply_decoder = new PRUDPPacketReplyDecoder() {
            public PRUDPPacketReply decode(PRUDPPacketHandler handler, InetSocketAddress originator, DataInputStream is, int action,
                    int transaction_id)

            throws IOException {
                switch (action) {

                    case PRUDPPacketTracker.ACT_REPLY_CONNECT: {
                        return (new PRUDPPacketReplyConnect(is, transaction_id));
                    }
                    case PRUDPPacketTracker.ACT_REPLY_ANNOUNCE: {
                        if (PRUDPPacketTracker.VERSION == 1) {
                            return (new PRUDPPacketReplyAnnounce(is, transaction_id));
                        } else {
                            return (new PRUDPPacketReplyAnnounce2(is, transaction_id));
                        }
                    }
                    case PRUDPPacketTracker.ACT_REPLY_SCRAPE: {
                        if (PRUDPPacketTracker.VERSION == 1) {
                            return (new PRUDPPacketReplyScrape(is, transaction_id));
                        } else {
                            return (new PRUDPPacketReplyScrape2(is, transaction_id));
                        }
                    }
                    case PRUDPPacketTracker.ACT_REPLY_ERROR: {
                        return (new PRUDPPacketReplyError(is, transaction_id));
                    }
                    default: {
                        throw (new IOException("Unrecognised action '" + action + "'"));
                    }
                }
            }
        };

        Map reply_decoders = new HashMap();

        reply_decoders.put(new Integer(PRUDPPacketTracker.ACT_REPLY_CONNECT), reply_decoder);
        reply_decoders.put(new Integer(PRUDPPacketTracker.ACT_REPLY_ANNOUNCE), reply_decoder);
        reply_decoders.put(new Integer(PRUDPPacketTracker.ACT_REPLY_SCRAPE), reply_decoder);
        reply_decoders.put(new Integer(PRUDPPacketTracker.ACT_REPLY_ERROR), reply_decoder);

        PRUDPPacketReply.registerDecoders(reply_decoders);

        PRUDPPacketRequestDecoder request_decoder = new PRUDPPacketRequestDecoder() {
            public PRUDPPacketRequest decode(PRUDPPacketHandler handler, DataInputStream is, long connection_id, int action, int transaction_id)

            throws IOException {
                switch (action) {
                    case PRUDPPacketTracker.ACT_REQUEST_CONNECT: {
                        return (new PRUDPPacketRequestConnect(is, connection_id, transaction_id));
                    }
                    case PRUDPPacketTracker.ACT_REQUEST_ANNOUNCE: {
                        if (PRUDPPacketTracker.VERSION == 1) {
                            return (new PRUDPPacketRequestAnnounce(is, connection_id, transaction_id));
                        } else {
                            return (new PRUDPPacketRequestAnnounce2(is, connection_id, transaction_id));
                        }
                    }
                    case PRUDPPacketTracker.ACT_REQUEST_SCRAPE: {
                        return (new PRUDPPacketRequestScrape(is, connection_id, transaction_id));
                    }
                    default: {
                        throw (new IOException("unsupported request type"));
                    }
                }
            }
        };

        Map request_decoders = new HashMap();

        request_decoders.put(new Integer(PRUDPPacketTracker.ACT_REQUEST_CONNECT), request_decoder);
        request_decoders.put(new Integer(PRUDPPacketTracker.ACT_REQUEST_ANNOUNCE), request_decoder);
        request_decoders.put(new Integer(PRUDPPacketTracker.ACT_REQUEST_SCRAPE), request_decoder);

        PRUDPPacketRequest.registerDecoders(request_decoders);

    }
}
